That is a common strategy but, as far as I can tell, a completely useless one. The US govt has been spending resources for years pushing messages that people should just not do drugs, or that by doing drugs they are funding terrorists, destroying families, etc. I haven't seen any evidence that such campaigns work, and given drug use rates across time and countries I'm pretty skeptical that they do.

People do less drugs then they did in the past. Especially young people.

Do they? There are many sources disputing whether DARE had any positive effect, and this specifically https://www.dualdiagnosis.org/drug-addiction/dare-program-wo... also shows growing use. (Then again, it depends what's "now" and "past")

I did not said that dare or any other specific anti drug program worked. It is completely irrelevant.

Simply, young people take less drugs and also have less teenage pregnancies then young people in the past used to.

i wonder how much of that decline is simply driven by changes in socialization. most casual drug use has always been peripheral to the spaces where people would congregate e.g; bars, concerts etc. now that kids pretty much have access to their ingroup basically on demand and entertain themselves differently than prior generations, maybe they're just less likely to end up in the kind of situations where social drugs are desirable.

No, that's cutting off the supply. The johns demand sex even if they're being prevented from buying any because it's been made too risky to approach the areas where there's supply.